#!/usr/bin/env python
# @coding  : utf-8
# @File    : t05.py
# @Time    : 2022/4/6 22:01
# @Author  : xdd
# @Software: PyCharm
# @desc :$
import matplotlib.pyplot as pyplot
import numpy

x = numpy.linspace(1000 / (6 * 60), 1000 / (3 * 60), 200)
t = [400 / (i - 1000 / 360) for i in x]
pyplot.plot(x, t)
pyplot.show()
